Yunseong Kim yskzalloc
🏠
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| # SPDX-License-Identifier: GPL-2.0 | |
| CC ?= gcc | |
| CFLAGS ?= -O2 -Wall -Wextra -Wno-unused-parameter -std=gnu99 | |
| LDFLAGS ?= | |
| BINS = cacheinfo-oob-predict cacheinfo-oob-trigger | |
| all: $(BINS) | |
| # Statically linked copies, for dropping into a guest image that may not have |
yskzalloc
/ debian-kernel-dbg-sym.sh
Last active
August 15, 2026 20:42
https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols
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| #!/bin/bash | |
| # | |
| # References: | |
| # https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols | |
| # https://wiki.debian.org/AutomaticDebugPackages | |
| # sudo apt install kdump-tools crash | |
| set -e | |
| # Ensure lsb_release is available |
yskzalloc
/ trixie-backports.sh
Created
August 15, 2026 16:47
Install latest Linux kernel based on trixie-backports.
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| #!/usr/bin/env bash | |
| set -euo pipefail | |
| # 1. Ensure the script is executed with root privileges | |
| if [[ $EUID -ne 0 ]]; then | |
| echo "[ERROR] This script must be run as root or with sudo." >&2 | |
| exit 1 | |
| fi | |
| # 2. Detect Debian codename (defaulting to trixie if undetected) |
yskzalloc
/ install-debug-symbols.sh
Last active
January 12, 2026 15:29
— forked from cantremember/install-debug-symbols.sh
Installing debug symbols for the Linux Kernel
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| #!/bin/bash | |
| # | |
| # https://askubuntu.com/questions/197016/how-to-install-a-package-that-contains-ubuntu-kernel-debug-symbols | |
| # https://wiki.ubuntu.com/DebuggingProgramCrash#Debug_Symbol_Packages | |
| echo "deb http://ddebs.ubuntu.com $(lsb_release -cs) main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list | |
| echo "deb http://ddebs.ubuntu.com $(lsb_release -cs)-updates main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list | |
| echo "deb http://ddebs.ubuntu.com $(lsb_release -cs)-proposed main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list | |
| sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01 | |
| sudo apt-get update |
yskzalloc
/ v6.15.11-dept-v16.3.config
Created
September 30, 2025 06:21
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| # | |
| # Automatically generated file; DO NOT EDIT. | |
| # Linux/arm64 6.15.11 Kernel Configuration | |
| # | |
| CONFIG_CC_VERSION_TEXT="Ubuntu clang version 20.1.8 (0ubuntu4)" | |
| CONFIG_GCC_VERSION=0 | |
| CONFIG_CC_IS_CLANG=y | |
| CONFIG_CLANG_VERSION=200108 | |
| CONFIG_AS_IS_LLVM=y | |
| CONFIG_AS_VERSION=200108 |
yskzalloc
/ compac.syzlang
Last active
October 7, 2025 06:34
Reproducible hung task on https://github.com/maxbyungchulpark/linux-dept/pull/2 ` ./syz-execprog -threaded=1 -repeat=0 -procs=8 -collide=1 -disable=binfmt_misc,cgroups,close_fds,devlink_pci,ieee802154,net_dev,net_reset,nic_vf,swap,sysctl,tun,usb,vhci,wifi compact.syzlang`
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| 2m28.194272433s ago: executing program 7 (id=14399): | |
| r0 = openat$vimc2(0xffffffffffffff9c, &(0x7f00000002c0), 0x2, 0x0) | |
| close(r0) | |
| openat$sysctl(0xffffffffffffff9c, &(0x7f0000000080)='/proc/sys/vm/compact_memory\x00', 0x1, 0x0) | |
| pwritev2(r0, &(0x7f0000000040)=[{&(0x7f00000000c0)='1', 0x1}], 0x1, 0x0, 0x2, 0x10) | |
| r1 = openat$ppp(0xffffffffffffff9c, &(0x7f0000000000), 0x400, 0x0) | |
| ioctl$PPPIOCGNPMODE(r1, 0xc008744c, &(0x7f0000000100)={0x29}) | |
| ioctl$sock_inet6_SIOCADDRT(0xffffffffffffffff, 0x890b, 0x0) | |
| syz_mount_image$btrfs(&(0x7f0000005100), &(0x7f00000002c0)='./file0\x00', 0x0, &(0x7f0000005180), 0x0, 0x50e7, &(0x7f00000051c0)="$eJzs3U+IVVUcB/DzZpxxUpl5gcbUbGwrgeIiSDEHI2jC4JWrCnR0EYSQgxTUQhBdSLRoQAl0pYRCITE7Ny6kwBBCaRdUECFCiCC1kP4sYt6958595/rue45jY/r5xMy95/7uOfe8x13M9+W5LwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAI4dxTe07V1bdMbVh3fmrnjRO7r945d+zylRAa7eONvL5nxytvvLNrz2sjscP069m22ew2ZNb1l6wx3HFwvl/nz94QwlAywGC+fXmwMmp592B1wFpH1p6cGL+14+KZibNrth9qHKi+dOaNLPcElkt+X11fuJcm278Hk |
yskzalloc
/ openssl-oqs.log
Created
September 17, 2025 21:02
liboqs(https://github.com/open-quantum-safe/liboqs): 1698d86177c51aeea3f22eb531a793625edd321f, oqs-provider(https://github.com/open-quantum-safe/oqs-provider): 39c5ab11246d6426720d72c0a74510d5d26de9f1
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| $ git clone https://github.com/open-quantum-safe/liboqs.git | |
| $ cd liboqs | |
| $ mkdir build && cd build | |
| $ cmake -DBUILD_SHARED_LIBS=ON -DOQS_ALGS_ENABLED="All" -DOQS_ENABLE_SIG_STFL_LMS=ON -DCMAKE_INSTALL_PREFIX=$HOME/.local -DOQS_USE_OPENSSL=ON.. | |
| $ sed -i "s/false/true/g" oqs-template/generate.yml && LIBOQS_SRC_DIR=$HOME/liboqs python3 oqs-template/generate.py | |
| $ git clone https://github.com/open-quantum-safe/oqs-provider.git | |
| $ cd oqs-provider/ | |
| $ mkdir build |
yskzalloc
/ atomic sleep check on gfs2 with cocci
Created
August 16, 2025 02:52
This is WIP for atomic sleep check in linux kernel with cocci check. `make coccicheck COCCI=../../scripts/coccinelle/rt/sleep_in_atomic.cocci MODE=report M=./fs/gfs2 2>&1 | tee gfs2-rt.log`
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| make[1]: Entering directory '/home/ysk/linux/fs/gfs2' | |
| Please check for false positives in the output before submitting a patch. | |
| When using "patch" mode, carefully review the patch before submitting it. | |
| /home/ysk/.local/bin/spatch -D report --no-show-diff --very-quiet --cocci-file ../../scripts/coccinelle/rt/sleep_in_atomic.cocci --no-includes --include-headers --patch /home/ysk/linux --dir . -I /home/ysk/linux/arch/arm64/include -I /home/ysk/linux/arch/arm64/include/generated -I /home/ysk/linux/include -I /home/ysk/linux/include -I /home/ysk/linux/arch/arm64/include/uapi -I /home/ysk/linux/arch/arm64/include/generated/uapi -I /home/ysk/linux/include/uapi -I /home/ysk/linux/include/generated/uapi --include /home/ysk/linux/include/linux/compiler-version.h --include /home/ysk/linux/include/linux/kconfig.h --jobs 6 --chunksize 1 | |
| Error: Required data (ATOMIC_CALLEES, POTENTIAL_SLEEPERS, or CALL_GRAPH) not collected. | |
| Debug: POTENTIAL_SLEEPERS = {'gfs2_quota_sync': {'mutex_lock() at ./quota.c:1324 (is a sleeping l |
yskzalloc
/ gist:cd33d735406dc1b532fc0194eac73b70
Last active
August 14, 2025 06:29
coccicheck for the atomic in sleep for the PREEMPT_RT Linux Kernel
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| make[1]: Entering directory '/home/ysk/linux/fs/gfs2' | |
| Please check for false positives in the output before submitting a patch. | |
| When using "patch" mode, carefully review the patch before submitting it. | |
| /home/ysk/.local/bin/spatch -D report --no-show-diff --very-quiet --cocci-file /home/ysk/linux/scripts/coccinelle/api/alloc/alloc_cast.cocci --no-includes --include-headers --patch /home/ysk/linux --dir . -I /home/ysk/linux/arch/arm64/include -I /home/ysk/linux/arch/arm64/include/generated -I /home/ysk/linux/include -I /home/ysk/linux/include -I /home/ysk/linux/arch/arm64/include/uapi -I /home/ysk/linux/arch/arm64/include/generated/uapi -I /home/ysk/linux/include/uapi -I /home/ysk/linux/include/generated/uapi --include /home/ysk/linux/include/linux/compiler-version.h --include /home/ysk/linux/include/linux/kconfig.h --jobs 6 --chunksize 1 --use-idutils --use-glimpse --very-quiet --jobs 12 | |
| can't open glimpse index-file /home/ysk/linux/fs/gfs2/.glimpse_index | |
| (use -H to give an index-directory or run 'glimpseind |
yskzalloc
/ kcov-usb-invalid-sleeping.log
Created
July 25, 2025 19:33
PREEPT_RT have BUG from f85d39dd7ed8 ("kcov, usb: disable interrupts in kcov_remote_start_usb_softirq")
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| [ 114.639440][ C1] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 | |
| [ 114.639474][ C1] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 30, name: ksoftirqd/1 | |
| [ 114.639483][ C1] preempt_count: 0, expected: 0 | |
| [ 114.639488][ C1] RCU nest depth: 2, expected: 2 | |
| [ 114.639501][ C1] CPU: 1 UID: 0 PID: 30 Comm: ksoftirqd/1 Tainted: G W 6.16.0-rc1-rt1 #11 PREEMPT_RT | |
| [ 114.639516][ C1] Tainted: [W]=WARN | |
| [ 114.639519][ C1] Hardware name: QEMU KVM Virtual Machine, BIOS 2025.02-8 05/13/2025 | |
| [ 114.639525][ C1] Call trace: | |
| [ 114.639529][ C1] show_stack+0x2c/0x3c (C) | |
| [ 114.639561][ C1] __dump_stack+0x30/0x40 |
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